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David Walsh Blog

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    weatherstack: an Amazing Weather API

    One of my first tasks each day is checking the weather; it's a necessity for knowing what my children and I should wear, if I'm going to need to water the lawn or need to shovel snow, and if I can take meetings out on my...

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    How to Not Minify Source with webpack

    The webpack JavaScript utility has taken over the modern JavaScript landscape, so much so that it's hard to be a JavaScript developer and not use it. JavaScript build utilities are the point where they do best practices implicitly, like minify code, caching, and more.I was...

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    Stop Installing Packages Globally

    These days, most front-end projects are going to involve NPM packages of some kind. Occasionally, when browsing documentation for these packages, I’ll see a recommendation to install a package like this.Or like this.In both of these examples, the package is installed globally. This means you can...

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    Reverse Lookups with JavaScript

    I've always loved exploring regular expressions because they're one of those skills that's never taught in school -- you need to pick them up on the fly, messing up and fixing them along the way. Regex's are incredibly powerful, and one power they have are...

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    How to Build Firefox

    Open source is a dream and a gateway to an amazing career -- I'm a testament to that. One of the most amazing open source projects to ever exist, Mozilla Firefox, is a project I'm proud to work on as an employee of Mozilla. It's rewarding...

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    45 Web Tools To Master The Internet

    A big part of our daily jobs is accomplished with much ease and efficiency by using different web tools and services. There is no doubt that for any type of need there is a great solution that is doing its job.In this article, we are reviewed...

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    Promises and Static Values

    Async can throw a real wrench into the cogs of our programming workflows, all despite the fact that async is the modern JavaScript pattern. While async/await helps, there's sometimes confusion about the way to have a single function that returns a value whether it exists...

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    Mercurial Tips

    While most of the world seems to be using git for version control, Mozilla continues to use Mercurial (hg) to manage the Firefox source code. As a git and GitHub lover, it took me a while to get used to Mercurial. I...

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    Data URIs

    We're all familiar with traditional URI protocols like https, http, ftp, and file, but data URIs have become a large part of our online strategy. We can use them to display images, the Mac camera and webcams, and more. But what if we simply...

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    How to Crop Videos

    During a recent episode of the Script and Style podcast, I had noticed that the video recording had showed a bit of our internal chat that wasn't necessary for our viewers to see. While there's nothing wrong with giving viewers a peek into the show...

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    Welcome to My New Office

    My first professional web development was at a small print shop where I sat in a windowless cubical all day. I suffered that boxed in environment for almost five years before I was able to find a remote job where I worked from home. The first...

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    How to Create a RetroPie on Raspberry Pi – Graphical Guide

    Today we get to play amazing games on our super powered game consoles, PCs, VR headsets, and even mobile devices.  While I enjoy playing new games these days, I do long for the retro gaming systems I had when I was a kid: the original Nintendo...

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    Conquering Impostor Syndrome

    Two years ago I documented my struggles with Imposter Syndrome and the response was immense.  I received messages of support and commiseration from new web developers, veteran engineers, and even persons of all experience levels in other professions.  I've even caught myself reading the post...

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    Being a Dev Dad

    I get asked loads of questions every day but I'm always surprised that they're rarely questions about code or even tech -- many of the questions I get are more about non-dev stuff like what my office is like, what software I use, and oftentimes...

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    JavaScript Promise API

    While synchronous code is easier to follow and debug, async is generally better for performance and flexibility. Why "hold up the show" when you can trigger numerous requests at once and then handle them when each is ready?  Promises are becoming a big part of the JavaScript world...

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    7 Essential JavaScript Functions

    I remember the early days of JavaScript where you needed a simple function for just about everything because the browser vendors implemented features differently, and not just edge features, basic features, like addEventListener and attachEvent.  Times have changed but there are still a few functions each developer should...

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    I’m an Impostor

    This is the hardest thing I've ever had to write, much less admit to myself.  I've written resignation letters from jobs I've loved, I've ended relationships, I've failed at a host of tasks, and let myself down in my life.  All of those feelings were very...